Show that 2px (r, , ) and 2 py (r, , ) can be written in

Show that ψ_2px (r, θ, ∅) and ψ2_py (r, θ, ∅) can be written in the form Nxe^−r/2a0 and N′ye^{−r / 2a0}, where N and N′ are normalization constants.